Man Stuffs M5 V10 into E46 M3
If that’s not a perfect fit, then I don’t know what is. As much as I love the M3’s straight six, there’s something so perfect about the high strung V10 that suites the character of the car well. Of course, there’s also all that extra power and a lot less weight to contend with. I’d say that’s the recipe for a fun car.